Derivative Financial Instruments - Location of Income (Expense) Recognized in Income on Derivative, Non-Designated Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Derivative
Net revenue	$ 1,945	$ 1,881	$ 5,783	$ 5,552
Research and development	584	556	1,782	1,693
Interest and other income (expense), net	17	(7)	45	(12)
Net revenue
Derivative
Gains (losses) on foreign currency forward contracts designated as cash flow hedges	13	67	54	147
Research and development
Derivative
Gains (losses) on foreign currency forward contracts designated as cash flow hedges	(2)	(6)	(9)	(14)
Interest and other income (expense), net
Derivative
Gains (losses) on foreign currency forward contracts not designated as hedging instruments	$ (11)	$ (53)	$ 5	$ (26)